Guide and Reference
UE4 is a rather large piece of software and perhaps should have two different forms of documentation? A guide that can be read from start to finish, and a reference that can be used to quickly find details on a specific feaure. I’m not sure how feasable this is, but I see it done with lots of other software products. I think that many companies might turn to this model because things get muddled when they try to mix a guide with a reference. It would be like trying to learn english from a dictionary that has the lessons thrown in where the words use a particular rule or rules english.